Chapter 2 Introduction

The SSH Tectia client/server solution is designed to cost-effectively deploy and centrally manage secure end-to-end communication within corporate networks. SSH Tectia allows secure network services over an unsecured network, such as the Internet. SSH Tectia is based on Secure Shell (SecSh) technology originally developed by the founders of SSH Communications Security.

The Secure Shell concept originated on Unix as a replacement for the unsecured "Berkeley services", that is, the rsh, rcp, and rlogin commands. Secure Shell replaces other, unsecured terminal applications (such as telnet and FTP). It allows you to securely log in to remote host computers, to execute commands safely on a remote computer, to securely copy remote files, to forward X11 sessions (on Unix), and to provide secure encrypted and authenticated communications between two non-trusted hosts. Arbitrary TCP/IP ports can also be forwarded over the secure channel, enabling secure connection, for example, to an e-mail service.